void MainWindow::OnCreate()
{
glewInit();
if (GL_ARB_vertex_array_object) {
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
}
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glEnable(GL_MULTISAMPLE);
glEnable(GL_COLOR_MATERIAL);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.82f, 0.85f, 0.96f, 1.0f);
const char *sides[6] =
{
"textures/skybox/ft.tga",
"textures/skybox/bk.tga",
"textures/skybox/up.tga",
"textures/skybox/dn.tga",
"textures/skybox/lf.tga",
"textures/skybox/rt.tga",
};
skybox = new Skybox(m_rc, sides);
mainShader = new ProgramObject(m_rc, "shaders/main.vert.glsl", "shaders/main.frag.glsl");
terrainShader = new ProgramObject(m_rc, "shaders/terrain.vert.glsl", "shaders/terrain.frag.glsl");
grass_mesh = new Mesh(m_rc);
gun = new Model(m_rc);
muzzle_flash = new Model(m_rc);
crosshair = new Model(m_rc);
terrain = new Terrain(m_rc);
grassShader = new ProgramObject(m_rc);
grassShader->BindAttribLocation(5, "TopPos");
grassShader->BindAttribLocation(6, "BottomPos");
grassShader->AttachShader(Shader(GL_VERTEX_SHADER, "shaders/grass.vert.glsl"));
grassShader->AttachShader(Shader(GL_FRAGMENT_SHADER, "shaders/grass.frag.glsl"));
grassShader->Link();
tex_grassobj = new Texture2D("textures/grassobj.tga");
tex_ground = new Texture2D("textures/ground.tga", GL_TEXTURE0);
tex_grass = new Texture2D("textures/grass.tga", GL_TEXTURE1);
tex_rocks = new Texture2D("textures/rocks.tga", GL_TEXTURE2);
tex_grassobj->SetFilters(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
tex_grassobj->SetWrapMode(GL_CLAMP, GL_CLAMP);
tex_ground->SetFilters(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
tex_grass->SetFilters(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
tex_rocks->SetFilters(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
tex_grassobj->BuildMipmaps();
tex_ground->BuildMipmaps();
tex_grass->BuildMipmaps();
tex_rocks->BuildMipmaps();
terrain->LoadHeightmap("textures/hm.tga", heightScale);
GenerateGrass(grass_mesh);
grass_mesh->BindTexture(*tex_grassobj);
Texture2D gun_diffuse("textures/gun/diffuse.tga", GL_TEXTURE0),
gun_normal("textures/gun/normal.tga", GL_TEXTURE1),
gun_specular("textures/gun/specular.tga", GL_TEXTURE2);
gun_diffuse.SetFilters(GL_LINEAR, GL_LINEAR);
gun_normal.SetFilters(GL_LINEAR, GL_LINEAR);
gun_specular.SetFilters(GL_LINEAR, GL_LINEAR);
gun->LoadObj("models/gun.obj");
gun->meshes[0]->BindTexture(gun_diffuse);
gun->meshes[0]->BindNormalMap(gun_normal);
gun->meshes[0]->BindSpecularMap(gun_specular);
gun->BindShader(*mainShader);
gun->location = Vector3f(0.7f, -2.0f, -2.0f);
gun->scale = Vector3f(-1, 1, -1);
Texture2D tex_muzzle("textures/muzzle.tga");
tex_muzzle.SetFilters(GL_LINEAR, GL_LINEAR);
muzzle_flash->LoadObj("models/quad.obj");
muzzle_flash->meshes[0]->BindTexture(tex_muzzle);
muzzle_flash->BindShader(*mainShader);
muzzle_flash->location = Vector3f(0.72f, -0.26f, -3.5f);
Texture2D tex_ie("textures/ie.tga");
tex_ie.SetFilters(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
tex_ie.BuildMipmaps();
Model target(m_rc);
target.LoadObj("models/target.obj");
target.meshes[0]->BindTexture(tex_ie);
target.meshes[1]->BindTexture(tex_ie);
target.BindShader(*mainShader);
targets = new Target[numTargets];
Vector2i s = terrain->GetSize();
for (int i = 0; i < numTargets; i++)
{
targets[i].model = new Model(target);
float x = (float)(rand() % (s.x - 1) - s.x/2 + 1);
float z = (float)(rand() % (s.y - 1) - s.y/2 + 1);
float a = (float)(rand() % 360);
targets[i].model->location = Vector3f(x, terrain->GetHeightAt(x, z), z);
targets[i].model->rotation = Quaternion(Vector3f(0,1,0), a);
}
Texture2D tex_corsshair("textures/crosshair.tga");
tex_corsshair.SetFilters(GL_LINEAR, GL_LINEAR);
crosshair->AddMesh(*muzzle_flash->meshes[0]);
crosshair->meshes[0]->BindTexture(tex_corsshair);
crosshair->BindShader(*mainShader);
crosshair->scale = Vector3f(4.0f);
mainShader->Uniform("ColorMap", 0);
mainShader->Uniform("NormalMap", 1);
mainShader->Uniform("SpecularMap", 2);
mainShader->Uniform("FrontMaterial.shininess", 100);
terrainShader->Uniform("FrontMaterial.diffuse", 0.5f, 0.5f, 0.5f);
terrainShader->Uniform("HeightScale", heightScale);
terrainShader->Uniform("tex_ground", 0);
terrainShader->Uniform("tex_grass", 1);
terrainShader->Uniform("tex_rocks", 2);
grassShader->Uniform("tex_grass", 0);
camera.SetPosition(0, growth + terrain->GetHeightAt(0, 0), 0);
}
bool WorldRenderer::Update()
{
// Update Terrain Routine
UpdateTerrain();
// Cam Pos
Vector3 camPos = zGraphics->GetCamera()->GetPosition();
// Don't update grass if we don't have a world
if ( zWorld )
{
// Check if we should render grass
zGraphics->SetGrassFilePath("Media/Grass.png");
if ( zGraphics->GetRenderGrassFlag() )
{
if ( (zLastGrassUpdatePos - camPos.GetXZ()).GetLength() >= zGrassUpdateDistance )
{
std::map<Vector2UINT, int> grassSectors;
// Remove Current Grass Sectors
for( auto i = zGrass.cbegin(); i != zGrass.cend(); ++i )
{
grassSectors[i->first]--;
}
// Insert New Sectors
std::set<Vector2UINT> newSectorsSet;
zWorld->GetSectorsInCicle(camPos.GetXZ(), zGrassFarDistance, newSectorsSet);
for( auto i = newSectorsSet.cbegin(); i != newSectorsSet.cend(); ++i )
{
grassSectors[*i]++;
}
// Update Sector Grasses
for( auto i = grassSectors.cbegin(); i != grassSectors.cend(); ++i )
{
if ( i->second < 0 )
{
auto grassIt = zGrass.find(i->first);
if ( grassIt != zGrass.cend() )
{
if ( grassIt->second )
{
zGraphics->DeleteBillboardCollection(grassIt->second);
}
zGrass.erase(grassIt);
}
}
else if ( i->second > 0 )
{
GenerateGrass(i->first);
}
}
zLastGrassUpdatePos = camPos.GetXZ();
}
}
}
// Check Distance
if ( (zLastEntUpdatePos - camPos).GetLength() > 10.0f )
{
// Update Existing LOD
for( auto i = zEntities.cbegin(); i != zEntities.cend(); ++i )
{
zEntsToUpdate.insert(i->first);
}
// Scan New Entities
if ( zWorld )
{
zWorld->GetEntitiesInCircle(camPos.GetXZ(), zGraphics->GetEngineParameters().FarClip, zEntsToUpdate);
}
// Update Position
zLastEntUpdatePos = camPos;
}
// Update a between 10% and a minimum of 25
unsigned int x = zEntsToUpdate.size() / 10;
if ( x < 25 ) x = 25;
if ( x > 100 ) x = 100;
auto i = zEntsToUpdate.begin();
while( i != zEntsToUpdate.end() )
{
SetEntityGraphics(*i);
i = zEntsToUpdate.erase(i);
if ( !x || !--x ) break;
}
// Check if there is more to be updated
return ( zEntsToUpdate.size() > 0 || zUpdatesRequired.size() > 0 );
}